Vault Fee Module — Vault Forge

Description

Composable fee system for ERC-4626 vaults supporting management, performance, entry, and exit fees. Abstract contract — inherit it in any vault to add plug-and-play fee collection with immutable caps.

Details

Category: contracts
Files: 5
Chains: Ethereum, Arbitrum, Base, Optimism

Solidity ^0.8.24 Foundry Ethereum Arbitrum Base Optimism

4 fee types: management, performance, entry, exit
Immutable fee caps (5% mgmt, 50% perf, 2% entry/exit)
Pure calculation functions for off-chain preview
High-water mark tracking for performance fees
Pro-rated management fee collection
Abstract contract — composable with any vault
Full NatSpec documentation
Comprehensive test coverage

vault-fee-module.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

/// @title Vault Fee Module
/// @notice Pluggable fee system: streaming, performance, entry/exit fees.
contract VaultFeeModule {
    address public immutable owner;
    uint256 public constant VERSION = 1;

    event Initialized(address indexed deployer);

    constructor() {
        owner = msg.sender;
        emit Initialized(msg.sender);
    }

    // ... full implementation in purchased package
}

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